diff --git a/sdk/peering/azure-mgmt-peering/azure/mgmt/peering/operations/_prefixes_operations.py b/sdk/peering/azure-mgmt-peering/azure/mgmt/peering/operations/_prefixes_operations.py
index 7493b10470b0..7119452328bf 100644
--- a/sdk/peering/azure-mgmt-peering/azure/mgmt/peering/operations/_prefixes_operations.py
+++ b/sdk/peering/azure-mgmt-peering/azure/mgmt/peering/operations/_prefixes_operations.py
@@ -39,14 +39,14 @@ def __init__(self, client, config, serializer, deserializer):
         self.config = config
 
     def get(
-            self, resource_group_name, my_peering_service, prefix_name, expand=None, custom_headers=None, raw=False, **operation_config):
+            self, resource_group_name, peering_service_name, prefix_name, expand=None, custom_headers=None, raw=False, **operation_config):
         """Gets an existing prefix with the specified name under the given
         subscription, resource group and peering service.
 
         :param resource_group_name: The name of the resource group.
         :type resource_group_name: str
-        :param my_peering_service: The name of the peering service.
-        :type my_peering_service: str
+        :param peering_service_name: The name of the peering service.
+        :type peering_service_name: str
         :param prefix_name: The name of the prefix.
         :type prefix_name: str
         :param expand: The properties to be expanded.
@@ -66,7 +66,7 @@ def get(
         url = self.get.metadata['url']
         path_format_arguments = {
             'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
-            'MyPeeringService': self._serialize.url("my_peering_service", my_peering_service, 'str'),
+            'peeringServiceName': self._serialize.url("peering_service_name", peering_service_name, 'str'),
             'prefixName': self._serialize.url("prefix_name", prefix_name, 'str'),
             'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str')
         }
@@ -104,17 +104,17 @@ def get(
             return client_raw_response
 
         return deserialized
-    get.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Peering/peeringServices/{MyPeeringService}/prefixes/{prefixName}'}
+    get.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Peering/peeringServices/{peeringServiceName}/prefixes/{prefixName}'}
 
     def create_or_update(
-            self, resource_group_name, my_peering_service, prefix_name, prefix=None, custom_headers=None, raw=False, **operation_config):
+            self, resource_group_name, peering_service_name, prefix_name, prefix=None, custom_headers=None, raw=False, **operation_config):
         """Creates a new prefix with the specified name under the given
         subscription, resource group and peering service.
 
         :param resource_group_name: The name of the resource group.
         :type resource_group_name: str
-        :param my_peering_service: The name of the peering service.
-        :type my_peering_service: str
+        :param peering_service_name: The name of the peering service.
+        :type peering_service_name: str
         :param prefix_name: The name of the prefix.
         :type prefix_name: str
         :param prefix: The prefix from which your traffic originates.
@@ -136,7 +136,7 @@ def create_or_update(
         url = self.create_or_update.metadata['url']
         path_format_arguments = {
             'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
-            'MyPeeringService': self._serialize.url("my_peering_service", my_peering_service, 'str'),
+            'peeringServiceName': self._serialize.url("peering_service_name", peering_service_name, 'str'),
             'prefixName': self._serialize.url("prefix_name", prefix_name, 'str'),
             'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str')
         }
@@ -178,17 +178,17 @@ def create_or_update(
             return client_raw_response
 
         return deserialized
-    create_or_update.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Peering/peeringServices/{MyPeeringService}/prefixes/{prefixName}'}
+    create_or_update.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Peering/peeringServices/{peeringServiceName}/prefixes/{prefixName}'}
 
     def delete(
-            self, resource_group_name, my_peering_service, prefix_name, custom_headers=None, raw=False, **operation_config):
+            self, resource_group_name, peering_service_name, prefix_name, custom_headers=None, raw=False, **operation_config):
         """Deletes an existing prefix with the specified name under the given
         subscription, resource group and peering service.
 
         :param resource_group_name: The name of the resource group.
         :type resource_group_name: str
-        :param my_peering_service: The name of the peering service.
-        :type my_peering_service: str
+        :param peering_service_name: The name of the peering service.
+        :type peering_service_name: str
         :param prefix_name: The name of the prefix.
         :type prefix_name: str
         :param dict custom_headers: headers that will be added to the request
@@ -205,7 +205,7 @@ def delete(
         url = self.delete.metadata['url']
         path_format_arguments = {
             'resourceGroupName': self._serialize.url("resource_group_name", resource_group_name, 'str'),
-            'MyPeeringService': self._serialize.url("my_peering_service", my_peering_service, 'str'),
+            'peeringServiceName': self._serialize.url("peering_service_name", peering_service_name, 'str'),
             'prefixName': self._serialize.url("prefix_name", prefix_name, 'str'),
             'subscriptionId': self._serialize.url("self.config.subscription_id", self.config.subscription_id, 'str')
         }
@@ -234,17 +234,17 @@ def delete(
         if raw:
             client_raw_response = ClientRawResponse(None, response)
             return client_raw_response
-    delete.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Peering/peeringServices/{MyPeeringService}/prefixes/{prefixName}'}
+    delete.metadata = {'url': '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Peering/peeringServices/{peeringServiceName}/prefixes/{prefixName}'}
 
     def list_by_peering_service(
-            self, resource_group_name, my_peering_service, expand=None, custom_headers=None, raw=False, **operation_config):
+            self, resource_group_name, peering_service_name, expand=None, custom_headers=None, raw=False, **operation_config):
         """Lists all prefixes under the given subscription, resource group and
         peering service.
 
         :param resource_group_name: The name of the resource group.
         :type resource_group_name: str
-        :param my_peering_service: The name of the peering service.
-        :type my_peering_service: str
+        :param peering_service_name: The name of the peering service.
+        :type peering_service_name: str
         :param expand: The properties to be expanded.
         :type expand: str
         :param dict custom_headers: headers that will be added to the request